"Charles Krause" <osi### [at] cheerfulcom> wrote:

>
>Dominik Herrmann wrote in message <6gn6l7$60q$1@oz.aussie.org>...
>>I have a question to all those POV-Ray-Cracks:
>>I'd like to render a scene which contains a lake. My problem is I have no
>>idea how to produce natural looking waves. Has anyone ideas how to do? With
>>heightfields or the ripples pattern?
>>
>>Dominik Herrmann
>>
>>
>
>
>Both work - but in different circumstances. Ripple pattern works and are
>easy to do - not so much with the pigment, but you might try rippling the
>normals. However this only LOOKS like ripples. If you render close to the
>water, it becomes obvious that the water is really flat. Height fields is
>something I haven't tried - although I don't see why it wouldn't work - and
>it would actually produce 3D ripples.
>     All this only makes ripples however. If you want WAVES - that's a whole
>new kettle of fish, and one I'm not sure how you'd crack. Waves are pretty
>complex shapes really
>
>

I've read somewhere that some of the computer animated oceans in James
Cameron's "Titanic" were based on some pretty complicated algorithms
which the military developed - apparently they made a detailed study
of the physical characteristics of water, and then converted them into
complex mathematical formulae. (sp?). This probably doesn't help your
problem, but it's some interesting trivia...  :)
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